How does a character multiclass into the Barbarian Class

[Aaron L]

Learning to harness your anger to gain advantage in a fight? Developing a really bad temper? Jeez, there are LOTS of ways.

 

[DDK]

Have you read the 13th Warrior? It involves an Arabic poet(iirc?) travelling with some vikings. He becomes more like them over time.

One of the most underrated movies of all time...